Battery, power consuming device, method of manufacturing battery, and apparatus

Abstract

Embodiments of the present application provide a battery, an electric device, a method of manufacturing a battery, and an apparatus, wherein the battery comprises: a battery cell provided with a pressure relief mechanism configured to actuate to relieve internal pressure of the battery cell when the internal pressure or temperature of the battery cell reaches a threshold value; a manifold configured to contain a fire-fighting medium; a fire-fighting pipe configured to communicate with the manifold to deliver the fire-fighting medium to the fire-fighting pipe, and the fire-fighting pipe is configured to discharge the fire-fighting medium towards the battery cell when the pressure relief mechanism actuates; wherein two ends of the fire-fighting pipe are a first end and a second end, respectively, the first end is configured to communicate with the manifold to allow the fire-fighting medium to enter the fire-fighting pipe via the first end, and the second end is closed. The formation of condensate water outside the wall of the fire-fighting pipe can be reduced to solve the problem of short circuit of the battery cell caused by condensate water.

Description

[0001] This application is a divisional application of the invention patent application filed on October 19, 2020, with application number 202011120232.2 and entitled "Battery, Electrical Device, Method and Apparatus for Preparing a Battery". Technical Field

[0002] This application relates to the field of battery technology, and in particular to a battery, an electrical device, a method and apparatus for manufacturing a battery. Background Technology

[0003] Batteries, as an important new energy source, have received increasing attention. To reduce the hazards of spontaneous combustion due to thermal failure during use, existing systems typically incorporate fire suppression systems into batteries to prevent fires in the event of a combustion incident.

[0004] However, as the temperature changes during battery use, condensation can easily form on the outer wall of the fire protection system, which can then cause short circuits in the conductive components of the battery cells. Summary of the Invention

[0005] This application provides a battery, an electrical device, a method and apparatus for manufacturing a battery, which can reduce or avoid the generation of condensate, thereby reducing or avoiding short circuits in individual battery cells.

[0006] The first aspect of this application provides a battery, comprising:

[0007] The battery cell is equipped with a pressure relief mechanism, which is actuated to release the internal pressure when the internal pressure or temperature of the battery cell reaches a threshold.

[0008] Manifolds are used to contain fire-fighting media;

[0009] Fire-fighting piping is used to connect with manifolds to deliver fire-fighting media to the fire-fighting piping, and the fire-fighting piping is configured to discharge fire-fighting media toward the battery cells when the pressure relief mechanism is actuated.

[0010] The fire-fighting pipeline has a first end and a second end at its two ends. The first end is used to connect with the collection pipeline so that the fire-fighting medium can enter the fire-fighting pipeline through the first end, and the second end is closed.

[0011] In some embodiments, the second end of the fire-fighting pipe is sealed by a first sealing cap.

[0012] In some embodiments, the second end has an opening, and the first closure includes a connected end wall and a side wall, the end wall being used to block the opening, the side wall being disposed around the outer periphery of the opening, and the side wall being used to seal against the tube wall of the second end to close the opening.

[0013] In some embodiments, the fire-fighting conduit is configured to be disrupted by discharge from the battery cell when the pressure relief mechanism is actuated, so that the fire-fighting medium is discharged and enters the battery cell via the pressure relief mechanism.

[0014] In some embodiments, the fire-fighting pipe has a weak point that is designed to be damaged by the discharge when the pressure relief mechanism is actuated.

[0015] In some embodiments, multiple fire-fighting pipes are provided, and the multiple fire-fighting pipes are spaced apart on one or both sides of the manifold.

[0016] The battery cells are configured as multiple units, and the multiple battery cells are configured as at least two battery modules. Each battery module includes at least one battery cell, and the pressure relief mechanism of each battery cell in each battery module is configured opposite to a fire hydrant.

[0017] In some embodiments, the battery module includes a plurality of battery cells arranged in a predetermined direction, and the length direction of the fire-fighting pipe is consistent with the arrangement direction of the plurality of battery cells.

[0018] In some embodiments, the length direction of the manifold forms a preset angle with the arrangement direction.

[0019] In some embodiments, the two ends of the manifold are a third end and a fourth end, respectively. The third end is used to input the fire-fighting medium, and the fourth end is closed.

[0020] In some embodiments, the fourth end of the manifold is closed by a second sealing cap.

[0021] In some embodiments, the fire-fighting pipe is higher than the manifold in the direction of gravity, so as to seal the fire-fighting medium in the manifold when the pressure relief mechanism is not activated.

[0022] In some embodiments, it further includes: a support member for supporting the manifold.

[0023] In some embodiments, the support has a support arm that is configured to be supported on the wall of the current collector pipe facing the battery cell.

[0024] In some embodiments, the support arms are arranged in pairs and spaced apart. A protrusion is provided on the wall of the current collection pipe facing the battery cell. The protrusion is arranged to be inserted between the pairs of support arms, and the two sides of the protrusion are supported by the pairs of support arms respectively.

[0025] In some embodiments, it further includes a limiting member configured to restrict the current collection conduit between adjacent battery modules.

[0026] In some embodiments, the limiting member includes a limiting wall and a support leg connected to the limiting wall;

[0027] The limiting wall is located above the current collector pipe and is used to restrict the current collector pipe from moving away from the battery cells;

[0028] The outriggers are used to support the limiting wall, and the outriggers are located between the current collector pipe and the battery module to limit the current collector pipe.

[0029] In some embodiments, the legs are arranged in pairs and spaced apart, and the manifold is confined between the pairs of legs.

[0030] In some embodiments, the limiting wall abuts against the wall of the manifold.

[0031] In some embodiments, the limiting wall has an arcuate portion that protrudes toward the manifold to abut against the wall of the manifold.

[0032] In some embodiments, the support leg is provided with a clamping part that protrudes toward the manifold to limit the manifold.

[0033] In some embodiments, the clamping part abuts against the wall of the manifold.

[0034] In some embodiments, the clamping part is configured as a cantilever structure.

[0035] In some embodiments, the device further includes a thermal management component for regulating the temperature of the battery cells, and the thermal management component is configured to communicate with a manifold to deliver fire-fighting media to the manifold.

[0036] According to a second aspect of this application, an electrical device is provided, including the battery of the above embodiment, the battery being used to provide electrical energy.

[0037] According to a third aspect of this application, a method for preparing a battery is provided, comprising:

[0038] A battery cell is provided, wherein the battery cell is provided with a pressure relief mechanism, the pressure relief mechanism being actuated to release the internal pressure when the internal pressure or temperature of the battery cell reaches a threshold.

[0039] Provide a manifold for containing fire-fighting media;

[0040] The fire-fighting pipeline is connected to the manifold to deliver the fire-fighting medium to the fire-fighting pipeline, and the fire-fighting pipeline is configured to discharge the fire-fighting medium toward the battery cell when the pressure relief mechanism is actuated;

[0041] The fire-fighting pipeline has a first end and a second end at its two ends. The first end is connected to the manifold so that the fire-fighting medium enters the fire-fighting pipeline through the first end, and the second end is closed.

[0042] According to a fourth aspect of this application, an apparatus for manufacturing a battery is provided, comprising:

[0043] A first device is used to provide a battery cell, wherein the battery cell is provided with a pressure relief mechanism, the pressure relief mechanism being actuated to release the internal pressure when the internal pressure or temperature of the battery cell reaches a threshold.

[0044] The second device is used to provide a manifold for containing fire-fighting media;

[0045] The third device is used to connect the fire-fighting pipeline to the manifold to deliver the fire-fighting medium to the fire-fighting pipeline, and the fire-fighting pipeline is configured to discharge the fire-fighting medium toward the battery cell when the pressure relief mechanism is actuated.

[0046] The fire-fighting pipeline has a first end and a second end at its two ends. The third device is used to connect the first end to the collection pipeline so that the fire-fighting medium enters the fire-fighting pipeline through the first end. The third device is also used to close the second end.

[0047] According to the battery provided in the embodiments of this application, on the one hand, by setting up a manifold, the fire-fighting medium can be contained in the manifold. The first end of the fire-fighting pipeline is connected to the manifold, allowing the fire-fighting medium to be transported to the fire-fighting pipeline when fire-fighting is needed. This not only achieves the fire-fighting function but also facilitates the destruction of the fire-fighting pipeline when the pressure relief mechanism is activated, thereby improving the timeliness of fire-fighting. On the other hand, by sealing the second end of the fire-fighting pipeline, the flow of the fire-fighting medium within the fire-fighting pipeline can be prevented when the pressure relief mechanism is not activated. This reduces the temperature difference between the inside and outside of the fire-fighting pipeline, reduces the formation of condensate on the outer wall of the fire-fighting pipeline, and solves the problem of battery cell short circuits caused by condensate, thereby extending the battery's service life. Attached Figure Description

[0048] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1-A This is a schematic diagram of the structure of an electrical device according to an embodiment of this application;

[0050] Figure 1-B This is a schematic diagram of the structure of a battery according to an embodiment of this application;

[0051] Figure 1-C This is a schematic diagram of the structure of a battery module according to an embodiment of this application;

[0052] Figure 1-D This is a schematic diagram of the structure of a battery cell according to an embodiment of this application;

[0053] Figure 2 This is a schematic diagram of the internal structure of a battery box according to an embodiment of this application;

[0054] Figure 3 This is a schematic diagram of the structure of a manifold and a fire-fighting pipe according to an embodiment of this application;

[0055] Figure 4 This is an exploded view of the structure of a manifold and a fire-fighting pipe according to an embodiment of this application;

[0056] Figure 5 This is a schematic diagram showing the location and structure of a fire protection system in a battery according to an embodiment of this application;

[0057] Figure 6 This is a top view of the fire protection system according to an embodiment of this application;

[0058] Figure 7 This is a schematic diagram of a connection method for a flow collection pipe according to an embodiment of this application;

[0059] Figure 8 This is a schematic diagram of the structure of a support member according to an embodiment of this application;

[0060] Figure 9 This is a partial front view of a manifold connection method according to an embodiment of this application;

[0061] Figure 10 This is a partial schematic diagram of a manifold connection method according to an embodiment of this application;

[0062] Figure 11 This is a schematic diagram of the structure of a limiting member according to an embodiment of this application;

[0063] Figure 12 This is a flowchart illustrating a method for preparing a battery according to an embodiment of this application;

[0064] Figure 13 This is a block diagram of an apparatus for preparing a battery according to an embodiment of this application. Detailed Implementation

[0065] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0066] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and represent preferred embodiments, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.

[0067] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0068] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0069] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0070] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0071] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).

[0072] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, "connection" or "linkage" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by fasteners, such as a connection fixed by screws, bolts, or other fasteners; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. In circuit structures, "connection" or "linkage" can refer not only to a physical connection but also to an electrical connection or a signal connection. For example, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate component, as long as the circuit is connected; it can also refer to the internal connection of two components. Signal connection can refer not only to signal connection through a circuit but also to signal connection through a media, such as radio waves. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0073] To clearly describe the various directions in the following embodiments, some directional terms may be used, such as... Figure 1-D The coordinate system in the figure defines the various orientations of the battery. The X-direction represents the length of the battery cell 400, the Y-direction is perpendicular to the X-direction in the horizontal plane and represents the width of the battery cell 400, and the Z-direction is perpendicular to both the X and Y directions and represents the height of the battery. Furthermore, the descriptions of the X, Y, and Z directions, etc., used to illustrate the operation and construction of the battery components in this embodiment, are not absolute but relative. Although these indications are appropriate when the battery components are in the positions shown in the figure, these directions should be interpreted differently when these positions change.

[0074] Based on the same orientational understanding, in the description of this application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0075] Rechargeable batteries can be called secondary batteries or power batteries. Currently, the most widely used rechargeable batteries are lithium batteries, such as lithium-sulfur batteries, sodium-lithium-ion batteries, or magnesium-ion batteries, but they are not limited to these. For ease of description, this article will refer to all rechargeable batteries as batteries.

[0076] Battery safety characteristics are an important factor in evaluating a battery, and it is necessary to ensure battery safety as much as possible during use or charging.

[0077] Batteries are generally composed of multiple battery cells connected together. When a battery cell experiences an external short circuit, overcharge, puncture, or flat impact, it is prone to thermal runaway. This causes emissions to be generated inside the battery cell, which include high-temperature fumes (which can produce open flames in severe cases) and volatile high-temperature electrolytes. These emissions can cause thermal diffusion during the emission process, leading to thermal runaway in other battery cells and even causing accidents such as explosions.

[0078] To address the thermal runaway of individual battery cells, an effective solution is to install a fire suppression system. When a battery cell experiences thermal runaway, the fire suppression system activates to prevent or delay explosion or fire. This system typically includes fire suppression pipelines containing the fire extinguishing agent, positioned above the battery cells. The agent circulates within these pipelines. Multiple fluid outlets are located on the fire suppression pipelines, opposite the pressure relief mechanisms of the battery cells. When a battery cell experiences thermal runaway, the fire extinguishing agent is ejected from these outlets, achieving the fire suppression purpose. However, through extensive research, the inventors discovered that during the circulation of the fire extinguishing agent within the fire suppression pipelines, the temperature of the agent is relatively low compared to the battery cells. When the battery cell temperature changes, especially when it rises, condensation easily forms on the outer wall of the fire suppression pipeline due to the temperature difference between the inside and outside. When a significant amount of condensation forms, it can easily flow onto the conductive components of the battery cells, causing short circuits and battery failure, thus affecting the normal operation of the battery.

[0079] In view of this, this application provides a battery that alters the structure of fire-fighting pipelines, preventing the circulation of fire-fighting media within the pipelines and reducing the formation of condensate on the outer walls of the pipelines, thereby reducing the risk of short circuits caused by condensate. Therefore, the battery of this application not only effectively controls the thermal runaway of individual battery cells, preventing further heat generation and high-temperature emissions, but also reduces the formation of condensate on the outer walls of fire-fighting pipelines in the fire protection system, reducing the risk of short circuits caused by condensation in individual battery cells.

[0080] The battery in this embodiment can be applied to various electrical devices that can be powered by electrical energy. These electrical devices can be, but are not limited to, electric vehicles, electric trains, electric bicycles, golf carts, drones, or ships. Furthermore, the electrical device can be a device powered solely by a battery or a hybrid power system. The battery provides electrical energy to the electrical device, which in turn drives the device via a motor.

[0081] For example, such as Figure 1-A The diagram shown is a structural schematic of an electrical device according to an embodiment of this application. The electrical device can be a vehicle, which can be a gasoline vehicle, a natural gas vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. The vehicle includes a battery 200, a controller 210, and a motor 220. The battery 200 supplies power to the controller 210 and the motor 220, serving as the vehicle's operating and driving power source. For example, the battery 200 meets the vehicle's power requirements for starting, navigation, and operation. For instance, the battery 200 supplies power to the controller 210, which controls the battery 200 to supply power to the motor 220. The motor 220 receives and uses the power from the battery 200 as the vehicle's driving power source, replacing or partially replacing gasoline or natural gas to provide driving power for the vehicle.

[0082] To enable the battery to achieve higher functionality to meet usage requirements, the battery 200 may include multiple battery modules that are electrically connected to each other, such as... Figure 1-B As shown, the battery 200 includes a first housing 201, a second housing 202, and a plurality of battery modules 300, wherein the first housing 201 and the second housing 202 are interlocked, and the plurality of battery modules 300 are arranged within the space enclosed by the first housing 201 and the second housing 202. In some embodiments, the first housing 201 and the second housing 202 are sealed together.

[0083] like Figure 1-C As shown, the battery module 300 includes multiple battery cells 400. These battery cells 400 can be electrically connected in series, parallel, or a combination thereof to achieve larger currents or voltages. A combination thereof refers to a combination of series and parallel connections. For example, as... Figure 1-C As shown, the battery cell 400 can be placed upright, with the height direction of the battery cell 400 aligned with the vertical direction, and multiple battery cells 400 can be arranged side by side along the width direction; or, the battery cell 400 can be placed flat, with the width direction of the battery cell 400 aligned with the vertical direction, and multiple battery cells 400 can be stacked at least one layer along the width direction, with each layer including multiple battery cells 400 arranged along the length direction.

[0084] To enable those skilled in the art to clearly understand the improvements of this application, the overall structure of the battery cell 400 will first be described.

[0085] like Figure 1-D As shown, the battery cell 400 includes a housing 40, an electrode assembly 30, and an end cap assembly 10. The end cap assembly 10 includes an end cap plate 10', which is connected to the housing 40 (e.g., welded) to form the outer shell of the battery cell 400. The electrode assembly 30 is disposed within the housing 40, and the housing 40 is filled with electrolyte. The battery cell 400 may be cubic, cuboid, or cylindrical.

[0086] Depending on the actual usage requirements, the electrode assembly 30 can be configured as a single unit or multiple units. For example... Figure 1-D As shown, at least two independently wound electrode assemblies 30 can also be provided within the battery. The electrode assembly 30 can be formed by winding or stacking a first electrode, a second electrode, and a separator film located between adjacent first and second electrodes together, wherein the separator film is an insulator between adjacent first and second electrodes. In this embodiment, the first electrode is exemplarily described as a positive electrode and the second electrode as a negative electrode. A positive active material is coated on the coating area of ​​the positive electrode, and a negative active material is coated on the coating area of ​​the negative electrode. Multiple uncoated areas extending from the coating area of ​​the main body are stacked as tabs. The electrode assembly 30 includes two tabs 301, namely a positive tab and a negative tab. The positive tab extends from the coating area of ​​the positive electrode, and the negative tab extends from the coating area of ​​the negative electrode.

[0087] End cap assembly 10 is disposed on top of electrode assembly 30, such as Figure 1-D As shown, the end cap assembly 10 includes an end cap plate 10' and two electrode terminals 5, which are a positive terminal and a negative terminal, respectively. Each electrode terminal 5 is provided with a connecting member 20, which is located between the end cap plate 10' and the electrode assembly 30.

[0088] For example, Figure 1-D The tab 301 of the middle electrode assembly 30 is located at the top. The positive electrode tab is connected to the positive terminal through a connecting member 20, and the negative electrode tab is connected to the negative terminal through another connecting member 20. Optionally, the battery cell 400 may include two end cap assemblies 10, which are respectively disposed at both ends of the housing 40, and each end cap assembly 10 is provided with an electrode terminal 5.

[0089] An explosion-proof component can also be installed on the end cover plate 10' to release the gas in the battery cell 400 in time when there is too much gas inside the battery cell 400, so as to avoid an explosion.

[0090] The end cover plate 10' is provided with a vent hole, which can be located at the middle position along the length of the end cover plate 10'. The explosion-proof component includes a pressure relief mechanism 6, which is located on the vent hole. Under normal conditions, the pressure relief mechanism 6 is sealed and installed on the vent hole. When the battery cell 400 expands and the gas pressure inside the casing rises to a value exceeding the preset value, the pressure relief mechanism 6 is actuated and opened, and the gas is released to the outside through the pressure relief mechanism 6.

[0091] The pressure relief mechanism 6 refers to an element or component that can be actuated to release internal pressure and / or internal substances when the internal pressure or internal temperature of the battery cell 400 reaches a predetermined threshold. Specifically, the pressure relief mechanism 6 can take the form of an explosion-proof valve, a gas valve, a pressure relief valve, or a safety valve, and can specifically employ pressure-sensitive or temperature-sensitive elements or structures. That is, when the internal pressure or temperature of the battery cell 400 reaches the predetermined threshold, the pressure relief mechanism 6 actuates or a weak structure provided in the pressure relief mechanism 6 is damaged, thereby forming an opening or channel for releasing internal pressure. The threshold mentioned in this application can be a pressure threshold or a temperature threshold, and the design of this threshold varies depending on design requirements. For example, the threshold can be designed or determined based on the internal pressure or internal temperature value of the battery cell 400 that is considered to pose a danger or runaway risk. Furthermore, this threshold may, for example, depend on one or more of the materials used in the positive electrode, negative electrode, electrolyte, and separator in the battery cell 400.

[0092] The term "actuation" as used in this application refers to the pressure relief mechanism 6 being activated or undergoing a certain state, thereby releasing the internal pressure of the battery cell 400. The action of the pressure relief mechanism 6 may include, but is not limited to, at least a portion of the pressure relief mechanism 6 rupturing, breaking, tearing, or opening, etc. When the pressure relief mechanism 6 is actuated, the high-temperature, high-pressure substances inside the battery cell 400 are discharged outwards from the actuated portion as emissions. In this way, the battery cell 400 can be depressurized under controllable pressure or temperature, thereby avoiding potentially more serious accidents. The emissions from the battery cell 400 mentioned in this application include, but are not limited to, electrolyte, dissolved or broken positive and negative electrode plates, fragments of the separator, high-temperature, high-pressure gases generated by the reaction, flames, etc. The high-temperature, high-pressure emissions are discharged towards the direction where the pressure relief mechanism 6 is located in the battery cell 400, and more specifically, towards the area where the pressure relief mechanism 6 is actuated. The force and destructive power of such emissions may be significant, even sufficient to break through one or more structures in that direction.

[0093] In some embodiments, such as Figure 1-DAs shown, the end cover plate 10' is provided with a through hole for injecting electrolyte into the battery cell 400. The through hole can be a round hole, an elliptical hole, a polygonal hole, or a hole of other shapes, and can extend along the height direction of the end cover plate 10'. The end cover plate 10' is provided with an injection member 2 for sealing the through hole.

[0094] like Figure 2 As shown, the battery 200 provided in this embodiment includes a battery cell 400, a current collection pipe 500, and a fire-fighting pipe 600. As mentioned above, the battery cell 400 is provided with a pressure relief mechanism 6. The pressure relief mechanism 6 is used to release the internal pressure when the internal pressure or temperature of the battery cell 400 reaches a threshold, so as to prevent the battery cell 400 from exploding or causing other accidents.

[0095] In this embodiment, the manifold 500 is used to contain the fire-fighting medium, so as to provide the fire-fighting medium to the fire-fighting pipeline 600 when needed. The fire-fighting pipeline 600 is connected to the manifold 500 to transport the fire-fighting medium to the fire-fighting pipeline 600, and the fire-fighting pipeline 600 is configured to discharge the fire-fighting medium toward the battery cell 400 when the pressure relief mechanism 6 is braked, so as to achieve the purpose of fire-fighting and prevent or delay the explosion or fire of the battery cell 400.

[0096] like Figure 3 and Figure 4 As shown in the embodiment of this application, the two ends of the fire-fighting pipeline 600 are a first end 610 and a second end 620, respectively. The first end 610 is used to connect with the manifold 500 so that the fire-fighting medium enters the fire-fighting pipeline 600 through the first end 610. The second end 620 is closed so that when the pressure relief mechanism 6 is not activated, the fire-fighting medium entering the fire-fighting pipeline 600 cannot circulate within the fire-fighting pipeline 600. This avoids the temperature drop of the pipe wall of the fire-fighting pipeline 600 caused by the circulation of the fire-fighting medium. Therefore, condensation is not easily formed on the pipe wall of the fire-fighting pipeline 600, thereby reducing the probability of short circuit of the battery cell 400 caused by condensation.

[0097] In this embodiment, by sealing the second end 620 of the fire-fighting pipe 600, the circulation of the fire-fighting medium in the fire-fighting pipe 600 can be prevented when the pressure relief mechanism 6 is not activated. This avoids the fire-fighting medium cooling the pipe wall of the fire-fighting pipe 600 during circulation, i.e., reducing the temperature of the pipe wall of the fire-fighting pipe 600. As a result, the temperature of the pipe wall of the fire-fighting pipe 600 is basically consistent with the temperature inside the battery. Therefore, excessive condensate is less likely to form on the pipe wall of the fire-fighting pipe 600, thereby solving the problem of short circuit of the battery cell 400 caused by condensate and extending the service life of the battery 200.

[0098] In this embodiment, the fire-fighting medium is contained in the manifold 500 and connected to the first end 610 of the fire-fighting pipeline 600. When the fire-fighting pipeline 600 needs to use the fire-fighting medium, for example, when the pressure relief mechanism 6 is actuated and the fire-fighting medium in the fire-fighting pipeline 600 needs to be discharged toward the battery cell 400, the fire-fighting medium can flow through the manifold 500 to the fire-fighting pipeline 600 for fire-fighting use.

[0099] It should be noted that, due to the installation of the manifold 500, the fire-fighting pipe 600 may not contain any fire-fighting medium initially. This not only solves the problem of condensation on the pipe wall, but also helps to reduce the internal pressure of the fire-fighting pipe 600. This makes it easier for the fire-fighting pipe 600 to be damaged when the pressure relief mechanism 6 is activated, so that the fire-fighting medium can flow out in a timely manner and improve the timeliness of fire-fighting.

[0100] In practical applications, when the fire-fighting pipe 600 is damaged, the pressure inside the fire-fighting pipe 600 is released. At this time, the fire-fighting medium in the manifold 500 will quickly flow toward the fire-fighting pipe 600, thereby providing fire protection for the battery cell 400.

[0101] In this embodiment, during the installation of the fire-fighting pipeline 600, gas at a preset pressure can be introduced into the fire-fighting pipeline 600. Alternatively, the fire-fighting pipeline 600 can be positioned higher than the manifold 500 in the direction of gravity, so that the fire-fighting medium is sealed within the manifold 500 when the pressure relief mechanism 6 is not activated, thereby concentrating the fire-fighting medium primarily within the manifold 500. When there is no fire-fighting medium within the fire-fighting pipeline 600, it is advantageous for the fire-fighting pipeline 600 to be damaged by emissions from the battery cell 400, facilitating timely fire suppression and reducing the occurrence of accidents.

[0102] In this embodiment of the application, by introducing gas at a preset pressure into the fire-fighting pipeline 600 as described above, or by setting the fire-fighting pipeline 600 higher than the manifold 500 in the direction of gravity, the fire-fighting medium can be transported to the fire-fighting pipeline 600 when the fire-fighting pipeline 600 is damaged, so as to meet the fire-fighting requirements.

[0103] In practical applications, the gas with the preset pressure can be an inert gas such as nitrogen. The preset pressure can be the pressure that concentrates the fire-fighting medium within the manifold 500. This application embodiment does not impose any special limitation on the specific pressure magnitude.

[0104] It should be noted that the initial state of the fire-fighting pipeline 600 is not strictly free of any fire-fighting medium. In practical applications, as long as there is a small amount of fire-fighting medium in the fire-fighting pipeline 600, it can achieve the effect of facilitating destruction.

[0105] In the embodiments of this application, such as Figure 4As shown, when the fire-fighting pipe 600 is set higher than the collection pipe 500 in the direction of gravity, the first end 610 of the fire-fighting pipe 600 needs to be bent in order to connect with the collection pipe 500. The specific bending angle can be set according to actual needs, and this application embodiment does not make any special limitation on this.

[0106] According to the battery 200 provided in the embodiments of this application, on the one hand, by setting up a collection pipe 500, the fire-fighting medium can be contained in the collection pipe 500. The first end 610 of the fire-fighting pipe 600 is connected to the collection pipe 500. When fire fighting is required, the fire-fighting medium can be transported to the fire-fighting pipe 600. This not only achieves the fire-fighting function, but also facilitates the destruction of the fire-fighting pipe 600 when the pressure relief mechanism 6 is actuated, thereby improving the timeliness of fire fighting. On the other hand, by sealing the second end 620 of the fire-fighting pipe 600, the circulation of the fire-fighting medium in the fire-fighting pipe 600 can be prevented when the pressure relief mechanism 6 is not actuated. This reduces the temperature difference between the inside and outside of the fire-fighting pipe 600 and reduces the formation of condensate on the outside of the pipe wall, thus solving the problem of short circuit of the battery cell 400 caused by condensate, thereby extending the service life of the battery 200.

[0107] In practical applications, the fire-fighting medium can be a liquid fire-fighting medium or a gaseous fire-fighting medium, such as water, carbon dioxide, nitrogen, or other flame-retardant liquids or gases. Any liquid or gas that can achieve the fire-fighting effect falls within the protection scope of the embodiments of this application.

[0108] In this embodiment, both the manifold 500 and the fire-fighting pipe 600 are elongated pipes, and their cross-sectional shapes can be square, circular, semi-circular, or polygonal combinations thereof. This embodiment does not impose any special limitations on these shapes. The dimensions of the manifold 500 and the fire-fighting pipe 600 can be determined based on the actual dimensions of the battery 200; this embodiment does not impose any special limitations on these dimensions.

[0109] In practical applications, there are various ways to close the second end 620. For example, the second end 620 can be integrally formed with the main body of the fire pipe 600, so that the fire pipe 600 is only open at the first end 610.

[0110] In the embodiments of this application, such as Figure 4 As shown, the second end 620 of the fire-fighting pipe 600 is closed by the first sealing cover 621.

[0111] In this embodiment of the application, the second end 620 is sealed by the first sealing cover 621. While sealing the second end 620, it can also help to clean up the residual substances inside the fire pipe 600, prevent the residue from thickening the pipe wall of the fire pipe 600, and thus affect the timely destruction of the fire pipe 600 during fire fighting.

[0112] In practical applications, the first sealing cover 621 can have various structural forms, which can seal the second end 620 while also facilitating disassembly. This application embodiment does not impose any special limitations on this.

[0113] For example, in this embodiment of the application, the second end 620 has an opening, and the first sealing cap 621 includes a connected end wall and a side wall. The end wall is used to block the opening, and the side wall is arranged around the outer periphery of the opening. The side wall is used to seal the opening with the tube wall of the second end 620 to close the opening. The sealing can be welded or bonded.

[0114] In this embodiment, the first sealing cover 621 is configured to include a connected end wall and a side wall. By sealing the opening through the end wall, the fire-fighting medium can be sealed inside the fire-fighting pipeline 600 when the pressure relief mechanism 6 is not activated. By setting the side wall around the outer periphery of the opening and sealing it with the pipe wall of the second end 620, the purpose of sealing the opening can be achieved, thereby realizing the sealing of the second end 620 and preventing the circulation of the fire-fighting medium.

[0115] In this embodiment, the fire-fighting pipe 600 is configured to be disrupted by discharge from the battery cell 400 when the pressure relief mechanism 6 is actuated, allowing the fire-fighting medium to be discharged and enter the battery cell 400 via the pressure relief mechanism 6. This means that if the battery 200 malfunctions and the internal pressure of the battery cell 400 rises above a preset value, causing high-temperature, high-pressure substances inside the battery cell 400 to be discharged as discharge from the actuation point of the pressure relief mechanism 6, these high-temperature, high-pressure discharges will disrupt the portion of the fire-fighting pipe 600 opposite to the pressure relief mechanism 6, thereby facilitating the timely discharge of the fire-fighting medium, which then flows into the battery cell 400 via the pressure relief mechanism 6, thus providing fire-fighting protection inside the battery cell 400. In some embodiments, the discharge of the fire-fighting medium from the fire-fighting pipe 600 can also be controlled by switching a valve.

[0116] In this embodiment, the fire-fighting pipe 600 is damaged by high-temperature, high-pressure emissions ejected from inside the battery cell 400. For example, the damage can be achieved by melting through the pipe, thereby enabling precise fire suppression of the faulty battery cell 400. Since only the portion of the fire-fighting pipe 600 opposite the faulty battery cell 400 is damaged, creating a breach, the fire-fighting medium can be concentrated and directed towards this location, resulting in a better fire-fighting effect.

[0117] In practical applications, since only a portion of the fire-fighting medium discharged from the fire-fighting pipeline 600 can enter the battery cell 400 through the pressure relief mechanism 6, the precision fire-fighting method described above in this application embodiment can improve the utilization rate of the fire-fighting medium and achieve better fire-fighting results.

[0118] In this embodiment, in order to facilitate the formation of a breach in the fire-fighting pipeline 600, the fire-fighting pipeline 600 has a weak section. The weak section is designed to be damaged by the discharged material when the pressure relief mechanism 6 is actuated, thereby facilitating the discharge of the fire-fighting medium from the weak section and achieving the purpose of fire-fighting.

[0119] In this embodiment, by setting a weak point on the fire-fighting pipe 600, it is beneficial for the high-temperature and high-pressure emissions ejected from inside the battery cell 400 to damage the fire-fighting pipe 600 more quickly, thereby improving the timeliness of fire fighting.

[0120] In practical applications, the location of the weak point can be set as needed. For example, the entire side of the fire hydrant 600 closest to the battery cell 400 can be designated as a weak point, or only the position opposite the pressure relief mechanism 6 of each battery cell 400 can be designated as a weak point. Regardless of the location method, as long as the exhaust material discharged from inside the battery cell 400 when the pressure relief mechanism 6 is actuated sprays precisely onto the weak point, it is acceptable.

[0121] In this embodiment, the weak point may be structurally weak, for example, the thickness of the weak point is thinner than the thickness of other parts of the fire hydrant 600; or, the weak point may be materially weak, for example, the material of the weak point may be a material that is easily damaged by high-temperature and high-pressure emissions ejected from inside the battery cell 400; or the strength of the weak point may be lower than the strength of other parts of the fire hydrant 600. This embodiment does not impose any special limitations on this.

[0122] In practical applications, multiple battery cells 400 are usually required inside a battery 200, and these multiple battery cells 400 can be electrically connected in series, parallel or mixed to form a battery module 300.

[0123] In this embodiment of the application, multiple battery cells 400 are configured as at least two battery modules 300, each battery module 300 includes at least one battery cell 400, and the pressure relief mechanism 6 of each battery cell 400 in each battery module 300 is arranged opposite to a fire pipe 600.

[0124] like Figure 5As shown, one battery module 300 corresponds to one fire-fighting pipe 600. The pressure relief mechanism 6 of the battery cells 400 inside the battery module 300 is set opposite to the same fire-fighting pipe 600. Thus, multiple battery cells 400 in the same battery module 300 can be fire-fighted through the same fire-fighting pipe 600, thereby saving the number of fire-fighting pipes 600 and saving costs.

[0125] In this embodiment, at least two battery modules 300 are respectively provided with fire-fighting pipes 600, and the two fire-fighting pipes 600 can also be connected to the same manifold 500, thereby saving the number of manifolds 500, simplifying the structure and saving costs.

[0126] In practical applications, to save space in the battery 200, the current collector 500 can be placed between two adjacent battery modules 300. For example, as Figure 6 As shown, there are seven pairs of battery modules 300, each pair arranged side-by-side. One battery module 300 corresponds to one fire-fighting pipe 600, and the seven pairs of battery modules 300 correspond to seven pairs of fire-fighting pipes 600. There is only one manifold 500, which is located between each pair of battery modules 300. One pair of fire-fighting pipes 600 is located on both sides of the manifold 500. The seven pairs of fire-fighting pipes 600 are spaced apart on both sides of the manifold 500. Therefore, the manifold 500 and the multiple fire-fighting pipes 600 are connected to form a structure as shown in the diagram. Figure 3 The fishbone-like structure shown can be configured such that multiple fire-fighting pipes 600 are connected at intervals to both sides of the manifold 500, with the fire-fighting pipes 600 and the manifold 500 forming a certain angle, for example, 90 degrees, meaning the fire-fighting pipes 600 and the manifold 500 are perpendicular to each other. Alternatively, in some embodiments, the multiple fire-fighting pipes 600 can be arranged on the same side of the manifold 500.

[0127] In this embodiment of the application, by connecting the manifold 500 and multiple fire-fighting pipes 600 into a fishbone-like structure, it is convenient for each fire-fighting pipe 600 to be directly connected to the manifold 500. When fire fighting is required, the fire-fighting medium can be directly supplied from the manifold 500 to the fire-fighting pipe 600, which improves the timeliness of fire fighting and saves fire-fighting medium.

[0128] The following explanation uses the arrangement of multiple battery cells 400 in battery module 300 to illustrate the arrangement of the current collection pipe 500 and the fire protection pipe 600.

[0129] In this embodiment, a battery module 300 includes a plurality of battery cells 400 arranged in a predetermined direction, and the length direction of the fire-fighting conduit 600 is consistent with the arrangement direction of the plurality of battery cells 400. This is so that the pressure relief mechanism 6 of each battery cell 400 is positioned opposite to the fire-fighting conduit 600, meaning that one fire-fighting conduit 600 provides fire protection for the plurality of battery cells 400 in one battery module 300.

[0130] In the above embodiment, the length direction of the fire-fighting pipe 600 is consistent with the arrangement direction of the multiple battery cells 400, but the current collection pipe 500 forms a preset angle with the arrangement direction of the multiple battery cells 400. That is, the length direction of the current collection pipe 500 forms a preset angle with the length direction of the fire-fighting pipe 600.

[0131] In practical applications, the aforementioned preset angle can be different angles such as 90 degrees or 88 degrees. In the embodiments of this application, for example... Figure 3 As shown, the fire-fighting pipe 600 is perpendicular to the manifold pipe 500, with a preset included angle of 90 degrees.

[0132] In practical applications, since the fire-fighting pipe 600 is connected to both sides of the manifold 500, the manifold 500 can be set into a simple long strip structure without bending, making the processing simple and convenient.

[0133] In this embodiment of the application, the two ends of the manifold 500 are the third end 510 and the fourth end 520, respectively. Figure 4 and Figure 5 As shown, the third end 510 is used to input the fire-fighting medium, and the fourth end 520 is enclosed.

[0134] In practical applications, the third end 510 can be connected to a fire box (not shown) storing fire-fighting medium to input the fire-fighting medium into the manifold 500. The connection to the fire box can be disconnected after the manifold 500 is full of fire-fighting medium. The fire box is generally located outside the battery 200, maintaining a connection with the manifold 500 so that when fire-fighting medium flows into the fire-fighting pipeline 600, it can promptly replenish the manifold 500 with fire-fighting medium.

[0135] In another embodiment of this application, the third end 510 may also be connected to a thermal management component. This thermal management component is generally located at the bottom of the battery cell 400 and is used to regulate the temperature of the battery cell 400. For example, the thermal management component is used to cool or heat the battery cell 400 to a preset temperature. When cooling or lowering the temperature of the battery cell 400, the thermal management component is used to contain cooling fluid to lower the temperature of multiple battery cells 400. In this case, the thermal management component may also be called a cooling component, cooling system, or cooling plate, and the fluid it contains may be called a cooling medium or cooling fluid, more specifically, a coolant or cooling gas. Alternatively, the thermal management component may also be used to heat the battery cells 400 to raise their temperature; this embodiment of the application does not limit this. The thermal management component may be connected to a fire extinguisher box, and the thermal management component uses the fire extinguishing medium provided by the fire extinguisher box to regulate the temperature of the battery cell 400. For example, the thermal management component and the fire extinguisher box may form a circulation loop, with the fire extinguishing medium provided by the fire extinguisher box circulating between the thermal management component and the fire extinguisher box. The thermal management component uses the circulating fire extinguishing medium to regulate the temperature of the battery cell 400. For example, the third end 510 can be connected only to the heat management component to receive the fire-fighting medium provided by the heat management component. That is, the fire box provides the fire-fighting medium to the heat management component, and the heat management component then provides the fire-fighting medium to the third end 510, through which the fire-fighting medium is input into the manifold 500.

[0136] In another embodiment of this application, the third end 510, the thermal management component, and the fire box can be connected by a T-junction, meaning the fire box can simultaneously provide fire-fighting medium to both the third end 510 and the thermal management component. The fire box and the thermal management component may or may not form a circulation loop.

[0137] In this embodiment, by sealing the fourth end 520, the fire-fighting medium that enters the manifold 500 when the pressure relief mechanism 6 is not activated can also prevent the fire-fighting medium from circulating inside the manifold 500 through heat exchange during circulation. This avoids the fire-fighting medium from lowering the temperature of the manifold 500 wall through heat exchange during circulation. Similar to the fire-fighting pipe 600, condensate is less likely to form on the wall of the manifold 500, thereby reducing the probability of short circuit in the battery cell 400 caused by condensate.

[0138] Furthermore, by sealing the fourth end 520 of the manifold 500, the fire-fighting medium sealed within the manifold 500 will not circulate between the manifold 500 and the fire-fighting pipe 600 when it flows into the fire-fighting pipe 600, which can further reduce the formation of condensate on the pipe wall of the fire-fighting pipe 600.

[0139] In practical applications, there are multiple ways to close the fourth end 520. For example, the fourth end 520 can be integrally formed with the main body of the manifold 500, or the fourth end 520 can be closed by a second closing cover (not shown). For example, the second closing cover and the fourth end 520 can be closed by welding or bonding.

[0140] In practical applications, the second sealing cap can have various structural forms, serving to seal the fourth end 520 while also facilitating disassembly. For example, the second sealing cap can have the same structure as the first sealing cap 621. This application does not specifically limit the structural form of the second sealing cap in its embodiments.

[0141] It should also be noted that the main body of the manifold 500 is also equipped with multiple outlets, each of which is used to connect with the fire hydrant 600 so that the fire hydrant can flow into the fire hydrant 600 through the outlet.

[0142] In this embodiment, by providing a second sealing cap at the fourth end 520, the fourth end 520 is sealed, which also helps to clean the residue inside the collection pipe 500 and prevents the residue from blocking the outlet and affecting the flow of the fire-fighting medium.

[0143] In practical applications, the manifold 500 and the fire-fighting pipe 600 can be fixed inside the battery 200 in various ways. This application provides a detailed description of one such method as an example, but it is not the only limitation on the fixing method of the manifold 500 and the fire-fighting pipe 600. Any method that can fix the manifold 500 and the fire-fighting pipe 600 in a designated position falls within the protection scope of this application.

[0144] like Figure 7 As shown in the embodiment of this application, the battery 200 further includes a support member 700, which supports the current collection pipe 500 to support the current collection pipe 500 between adjacent battery modules 300 in the same row. For example, the battery 200 also includes a beam for supporting the battery module 300 and an end plate for fixing multiple battery cells 400 into the battery module 300. For example, the beam is located between adjacent battery modules 300 in the same row, and the end plate is located at both ends of the arrangement direction of the multiple battery cells 400, and the two end plates are connected by a fixing strap to combine the multiple battery cells 400 into the battery module 300. The support member 700 can be supported on the beam or the end plate, or the beam or the end plate can be directly used as the support member 700.

[0145] like Figure 8 As shown, the support member 700 has a support arm 710, which is configured to support the current collection pipe 500 on the wall facing the battery cell 400, thereby supporting the current collection pipe 500. Figure 9 Taking the orientation as an example, the support arm 710 can restrict the downward movement of the manifold 500.

[0146] like Figure 9 As shown, the support arms 710 are set in pairs to achieve the purpose of stably supporting the manifold 500.

[0147] Specifically, such as Figure 7 As shown, a pair of support members 700 can be provided, each of which is provided with a support arm 710, thereby forming a pair of support arms 710. Furthermore, multiple pairs of support arms 710 can be provided at intervals along the length direction of the manifold 500 to support the manifold 500 at a set height, for example, by using multiple pairs of support arms 710 to set the manifold 500 horizontally.

[0148] In the embodiments of this application, such as Figure 9 As shown, the support arms 710 are arranged in pairs, with the pairs of support arms 710 spaced apart. A protrusion 530 is provided on the wall of the manifold 500 facing the battery cell 400. The protrusion 530 is positioned to insert between the pairs of support arms 710, and the pipe walls on both sides of the protrusion 530 are supported by the pairs of support arms 710. In another embodiment of this application, the support arms 710 may not be clamped on the two sides of the protrusion 530 but may be directly supported on the pipe walls on both sides of the protrusion 530, or the support arms 710 may be clamped on the two sides of the protrusion 530 and supported on the pipe walls on both sides of the protrusion 530. In another embodiment of this application, the protrusion 530 is formed by the pipe wall of the manifold 500 facing the battery cell 400, with the protruding head of the protrusion 530 facing the support arm 710. The protrusion 530 forms a groove within the manifold 500, which can accommodate the fire-fighting medium.

[0149] By inserting the protrusion 530 between the paired support arms 710, the stability of the support arms 710 can be improved, and the flow collection pipe 500 can be prevented from sliding on the support arms 710.

[0150] In the embodiments of this application, such as Figure 10 As shown, the battery 200 also includes a limiting member 800, which is configured to restrict the current collection pipe 500 between adjacent battery modules 300 to limit the upward and left-right movement of the current collection pipe 500.

[0151] The limiting member 800 includes a limiting wall 810 and a support leg 820 connected to the limiting wall 810. The limiting wall 810 is located above the current collector pipe 500 and is used to restrict the current collector pipe 500 from moving away from the battery cell 400, i.e., moving upward as shown in the figure. The support leg 820 is used to support the limiting wall 810, and the support leg 820 is located on both sides of the current collector pipe 500 to limit the current collector pipe 500, i.e., the support leg 820 is located between the current collector pipe 500 and the battery module 300 to limit the current collector pipe 500 and prevent the current collector pipe 500 from moving in the left or right direction.

[0152] like Figure 11 As shown, the support legs 820 are arranged in pairs, with the pairs of support legs 820 spaced apart. The manifold 500 is confined between the pairs of support legs 820 to achieve the purpose of fixing the manifold 500. The limiting wall 810 and the support legs 820 form an inverted U-shaped structure.

[0153] Furthermore, the limiting wall 810 elastically abuts against the wall of the manifold 500. For example, the limiting wall 810 has an arc-shaped portion 811 that protrudes towards the manifold 500 to elastically abut against the wall of the manifold 500 and limit the upward movement of the manifold 500. For example, the limiting wall 810 has a hollow structure penetrating through it in the middle, with the opening of the hollow structure facing the manifold 500. The arc-shaped portion 811 is disposed in the hollow structure and connected to the limiting wall 810, for example, integrally formed.

[0154] Furthermore, the support leg 820 is provided with a clamping part 821, which protrudes toward the manifold 500 to limit the manifold 500 and prevent the manifold 500 from moving in the left and right directions.

[0155] Specifically, the clamping part 821 abuts against the wall of the manifold 500 to fix the manifold 500.

[0156] In practical applications, the clamping part 821 can have various structural forms. In this embodiment, the clamping part 821 is constructed as a cantilever structure. For example, the clamping part 821 can be an elastic arc-shaped buckle with one end fixed to the support leg 820 and the other end suspended. It can not only elastically clamp the collection pipe 500, but also facilitate the limiting member 800 to be snapped onto the end plate or disassembled from the end plate.

[0157] The battery provided in this application embodiment uses the support member 700 and the limiting member 800 to jointly limit and fix the current collection pipe 500, which can restrict the movement of the current collection pipe 500 in space, thereby improving the stability of the current collection pipe 500.

[0158] On the other hand, this application also provides an electrical device, which includes the aforementioned battery 200, and the battery 200 is used to provide electrical energy. The specific structure and working principle of the battery 200 have been described in detail in the above embodiments, and will not be repeated here.

[0159] In summary, the electrical device provided in this application embodiment, by incorporating the aforementioned battery, offers several advantages. Firstly, the battery, through its manifold, can contain the fire-fighting medium. Connected to the manifold at the first end of the fire-fighting pipeline, the medium can be transported to the pipeline during firefighting operations. This not only achieves the fire-fighting function but also facilitates the destruction of the fire-fighting pipeline when the pressure relief mechanism is activated, thereby improving the timeliness of firefighting. Secondly, the closed design at the second end of the fire-fighting pipeline prevents the flow of the fire-fighting medium within the pipeline when the pressure relief mechanism is not activated, thus reducing the temperature difference between the inside and outside of the pipeline and minimizing the formation of condensate on the outer wall of the pipeline. This addresses the issue of battery cell short circuits caused by condensate, thereby extending battery life. Furthermore, the closed design at the fourth end of the manifold prevents the flow of the fire-fighting medium within the pipeline when the pressure relief mechanism is not activated, further reducing the temperature difference between the inside and outside of the manifold and minimizing the formation of condensate on the outer wall of the manifold. This further addresses the issue of battery cell short circuits caused by condensate, thereby further extending battery life. In addition, by using support components and limiting components to jointly limit and fix the flow collection pipe, the movement of the flow collection pipe in space can be restricted, thereby improving the stability of the flow collection pipe.

[0160] The foregoing described the battery and power-consuming device of the present application embodiments. The following will describe the method and apparatus for preparing the battery of the present application embodiments, wherein parts not described in detail can be referred to the foregoing embodiments.

[0161] On the other hand, embodiments of this application also provide a method for preparing a battery, such as... Figure 12 As shown, the method for preparing the battery may include the following steps:

[0162] Step S1210: Provide a battery cell, wherein the battery cell is provided with a pressure relief mechanism, the pressure relief mechanism being actuated to release the internal pressure when the internal pressure or temperature of the battery cell reaches a threshold.

[0163] Step S1220: Provide a manifold for containing fire-fighting media;

[0164] Step S1230: Connect the fire-fighting pipeline to the manifold to deliver the fire-fighting medium to the fire-fighting pipeline, and the fire-fighting pipeline is configured to discharge the fire-fighting medium toward the battery cell when the pressure relief mechanism is actuated;

[0165] The fire-fighting pipeline has a first end and a second end at its two ends. The first end is connected to the manifold so that the fire-fighting medium enters the fire-fighting pipeline through the first end, and the second end is closed.

[0166] Referring to the embodiment of the battery 200, it can be seen that a pressure relief mechanism 6 needs to be prepared on the battery cell 400, the fire-fighting pipe 600 can be fixed in a position opposite to the pressure relief mechanism 6, and the current collection pipe 500 can be fixed between the battery modules 300.

[0167] As can be seen from the embodiment of battery 200, battery 200 also includes other components, which can be manufactured by appropriate methods to finally obtain the desired battery 200. In practical applications, any method that can manufacture the relevant components and connect the relevant components falls within the protection scope of the embodiments of this application, and will not be described in detail here.

[0168] On the other hand, this application also provides an apparatus for preparing batteries, referring to... Figure 13 A block diagram of an apparatus for manufacturing a battery according to an embodiment of this application is shown. Figure 13 As shown, the battery manufacturing apparatus 1300 may include:

[0169] The first device 1310 can be used to provide a battery cell, wherein the battery cell is provided with a pressure relief mechanism, which is actuated to release the internal pressure when the internal pressure or temperature of the battery cell reaches a threshold.

[0170] The second device 1320 can be used to provide a manifold for containing fire-fighting media;

[0171] The third device 1330 can be used to connect the fire-fighting pipeline to the manifold to deliver the fire-fighting medium to the fire-fighting pipeline, and the fire-fighting pipeline is configured to discharge the fire-fighting medium toward the battery cell when the pressure relief mechanism is actuated.

[0172] The fire-fighting pipeline has a first end and a second end at its two ends. The third device 1330 can be used to connect the first end to the collection pipeline so that the fire-fighting medium enters the fire-fighting pipeline through the first end. The third device 1330 can also be used to close the second end.

[0173] The specific details of the equipment used to prepare the batteries described above have been described in detail in the corresponding battery embodiments, and therefore will not be repeated here.

[0174] The features of the above-mentioned protected subjects and embodiments of this application can be referenced from each other. Where the structure allows, those skilled in the art can also flexibly combine the technical features of different embodiments to form more embodiments.

[0175] The foregoing has provided a detailed description of a battery, an electrical device, a method for manufacturing the battery, and an apparatus for this application. Specific embodiments have been used to illustrate the principles and implementation methods of this application. These embodiments are merely illustrative and are intended to aid in understanding the method and core concepts of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of this application.

Claims

1. A battery, comprising: A battery cell includes a housing, an electrode assembly, and an end cap assembly. The end cap assembly includes an end cap plate, which is connected to the housing to form the outer shell of the battery cell. The electrode assembly is disposed inside the housing. The end cap plate is provided with a pressure relief mechanism, which is actuated to release the internal pressure when the internal pressure or temperature of the battery cell reaches a threshold. Manifolds are used to contain fire-fighting media; A fire-fighting pipeline is provided for communication with the manifold to deliver the fire-fighting medium to the fire-fighting pipeline, and the fire-fighting pipeline is configured to discharge the fire-fighting medium toward the battery cell when the pressure relief mechanism is actuated. Wherein, the fire-fighting pipeline is higher than the collection pipeline in the direction of gravity, or the fire-fighting pipeline is filled with gas at a preset pressure, so as to seal the fire-fighting medium in the collection pipeline when the pressure relief mechanism is not activated; the two ends of the fire-fighting pipeline are a first end and a second end, the first end is used to communicate with the collection pipeline so that the fire-fighting medium enters the fire-fighting pipeline through the first end, and the second end is closed.

2. The battery according to claim 1, wherein, The second end of the fire-fighting pipe is sealed by the first sealing cap.

3. The battery according to claim 2, wherein, The second end has an opening, and the first sealing cap includes a connected end wall and a side wall. The end wall is used to block the opening, and the side wall is arranged around the outer periphery of the opening and is used to seal with the tube wall of the second end to close the opening.

4. The battery according to any one of claims 1-3, wherein, The fire-fighting pipeline is configured to be disrupted by emissions from the battery cell when the pressure relief mechanism is actuated, so that the fire-fighting medium is discharged and enters the battery cell via the pressure relief mechanism.

5. The battery according to claim 4, wherein, The fire-fighting pipeline has a weak section that is designed to be damaged by the discharge when the pressure relief mechanism is actuated.

6. The battery according to claim 1, wherein, The fire-fighting pipeline is configured as a plurality of such pipelines, which are spaced apart on one or both sides of the collection pipeline; The battery cells are configured in multiple ways, and the multiple battery cells are configured as at least two battery modules. Each battery module includes at least one battery cell, and the pressure relief mechanism of the battery cell in each battery module is arranged opposite to one of the fire-fighting pipes.

7. The battery according to claim 6, wherein, The battery module includes a plurality of battery cells arranged in a predetermined direction, and the length direction of the fire-fighting pipe is consistent with the arrangement direction of the plurality of battery cells.

8. The battery according to claim 7, wherein, The length direction of the collection pipe forms a preset angle with the arrangement direction.

9. The battery according to claim 1, wherein, The two ends of the manifold are a third end and a fourth end, respectively. The third end is used to input the fire-fighting medium, and the fourth end is enclosed.

10. The battery according to claim 9, wherein, The fourth end of the manifold is sealed by a second sealing cap.

11. The battery according to claim 1, wherein, Also includes: Support member, used to support the flow collection pipe.

12. The battery according to claim 11, wherein, The support has a support arm, which is configured to support the current collector pipe on the wall facing the battery cell.

13. The battery according to claim 12, wherein, The support arms are arranged in pairs and spaced apart. The current collection pipe has a protrusion on its wall facing the battery cell. The protrusion is inserted between the pair of support arms and is supported on both sides by the pair of support arms.

14. The battery according to claim 6, wherein, Also includes: A limiting element is configured to restrict the current collection conduit between adjacent battery modules.

15. The battery according to claim 14, wherein, The limiting component includes a limiting wall and a support leg connected to the limiting wall; The limiting wall is located above the current collection pipe and is used to restrict the current collection pipe from moving away from the battery cell. The support leg is used to support the limiting wall, and the support leg is located between the current collection pipe and the battery module to limit the current collection pipe.

16. The battery according to claim 15, wherein, The legs are arranged in pairs, and the pairs of legs are spaced apart, with the manifold confined between the pairs of legs.

17. The battery according to claim 15 or 16, wherein, The limiting wall abuts against the pipe wall of the manifold.

18. The battery according to claim 17, wherein, The limiting wall has an arc-shaped portion that protrudes toward the collection pipe to abut against the pipe wall of the collection pipe.

19. The battery according to claim 15, wherein, The support leg is provided with a clamping part, which protrudes toward the collection pipe to limit the position of the collection pipe.

20. The battery according to claim 19, wherein, The clamping part abuts against the wall of the manifold.

21. The battery according to claim 19 or 20, wherein, The clamping part is constructed as a cantilever structure.

22. The battery according to claim 1, wherein, It also includes: a thermal management component for regulating the temperature of the battery cell, and the thermal management component is configured to communicate with the manifold to deliver the fire-fighting medium to the manifold.

23. An electrical appliance, wherein, Includes the battery as described in any one of claims 1-22, the battery being used to provide electrical energy.

24. A method for preparing a battery, comprising: A battery cell is provided, wherein the battery cell includes a housing, an electrode assembly, and an end cap assembly. The end cap assembly includes an end cap plate, which is connected to the housing to form the outer shell of the battery cell. The electrode assembly is disposed within the housing. The end cap plate is provided with a pressure relief mechanism, which is actuated to release the internal pressure when the internal pressure or temperature of the battery cell reaches a threshold. Provide a manifold for containing fire-fighting media; The fire-fighting pipeline is connected to the manifold to deliver the fire-fighting medium to the fire-fighting pipeline, and the fire-fighting pipeline is configured to discharge the fire-fighting medium toward the battery cell when the pressure relief mechanism is actuated; Wherein, the fire-fighting pipeline is higher than the collection pipeline in the direction of gravity, or the fire-fighting pipeline is filled with gas at a preset pressure, so as to seal the fire-fighting medium in the collection pipeline when the pressure relief mechanism is not activated; the two ends of the fire-fighting pipeline are a first end and a second end, the first end is connected to the collection pipeline so that the fire-fighting medium enters the fire-fighting pipeline through the first end, and the second end is closed.

25. An apparatus for manufacturing batteries, comprising: A first device is used to provide a battery cell, wherein the battery cell includes a housing, an electrode assembly, and an end cap assembly, the end cap assembly includes an end cap plate, the end cap plate is connected to the housing to form the outer shell of the battery cell, the electrode assembly is disposed inside the housing, and the end cap plate is provided with a pressure relief mechanism, the pressure relief mechanism being actuated to release the internal pressure when the internal pressure or temperature of the battery cell reaches a threshold. The second device is used to provide a manifold for containing fire-fighting media; The third device is used to connect the fire-fighting pipeline to the manifold to deliver the fire-fighting medium to the fire-fighting pipeline, and the fire-fighting pipeline is configured to discharge the fire-fighting medium toward the battery cell when the pressure relief mechanism is actuated. Wherein, the fire-fighting pipeline is higher than the collection pipeline in the direction of gravity, or the fire-fighting pipeline is filled with gas at a preset pressure, so as to seal the fire-fighting medium in the collection pipeline when the pressure relief mechanism is not activated; the two ends of the fire-fighting pipeline are a first end and a second end, respectively, and the third device is used to connect the first end to the collection pipeline so that the fire-fighting medium enters the fire-fighting pipeline through the first end, and the third device is also used to close the second end.

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